Question 314Navigation General

70% to pass

How is a safe water mark, that can be passed close aboard on either side, painted and lighted?

A Red and white stripes with a Morse
B light
C Black and red stripes with an interrupted quick flashing light
D Black and white stripes with an interrupted quick flashing light
AI Explanation

The correct answer is D) Black and white stripes with an interrupted quick flashing light. Safe water marks, which can be passed close aboard on either side, are painted with black and white vertical stripes and display an interrupted quick flashing (2 flashes in quick succession, followed by a pause) white light. This color scheme and lighting pattern helps distinguish safe water marks from other types of navigation aids. The other answer choices do not accurately describe the proper visual characteristics of a safe water mark.

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Official Resources
USCG Navigation Rules (COLREGS) 33 CFR Navigation Rules USCG National Maritime Center
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